It wasn't that dirty.
I agree it wasn't vicious and I don't think there was malice, however it was careless and dangerous and warranted the 5 mins.
Same outcome as Blidh's hit on Josi the other night. Looks like a penalty that potentially leads to an injury is given a 5 minute major. I think the argument of a two minute penalty instead of the five minutes is fair. It's a bit refreshing that there is some form of consistency though.I think5 minutes is a bit excessive.